commissioned by the United States Department of Transportation and designed by AIGA. It is copyright-free, and is available here. This version was created from
by AIGA. It is copyright-free, and is available here. This version was created from the original eps file. This file was derived from: Aigaescalator up
commissioned by the United States Department of Transportation and designed by AIGA. It is copyright-free, and is available here. English determination method: